1. 27.5.04TRD Status meeting GSIClemens Adler Chamber production Production status/ Material status

2. 27.5.04TRD Status meeting GSIClemens Adler Production Status George and Petre from Bukarest were at Hd for 3 weeks: –We built 2 complete chambers + Glued 3 Frames + half wired 2 chambers Problems encountered: –Everything, especially: –Wire Winding –Padplane gluing

3. 27.5.04TRD Status meeting GSIClemens Adler Problems (new): Winding Winding machine: –Frame vibration: Cathode: wire jumps off Meteor Anode: wire breaks Currently: Brake on wire roll+slow velocity works. Control Problem: –At end of winding, winding machine does not stop. (happend twice) ->under investigation

4. 27.5.04TRD Status meeting GSIClemens Adler Problems (cont.): Padplanes gluing Scheme so far: –Roll on glue onto Fischer Panel Problem: always unglued areas. Same Problem reported by Oleg

5. 27.5.04TRD Status meeting GSIClemens Adler Padplane glueing (cont.) Different approach: Result: very flat and glued everywhere. +less glue needed

6. 27.5.04TRD Status meeting GSIClemens Adler Padplane gluing (even more) Back Panels display a warping after gluing the Padplanes: measured on padplane side: up to 600 microns lower in the middle than at the edges This behaviour is observed on 3 different Panels. But: gain uniformity is OK. Maybe no Problem, but watch it.

7. 27.5.04TRD Status meeting GSIClemens Adler (old) Production problems L-profiles are bent more than expected -need additional clamps on gluing table. After gluing to Radiator: L6C1 Chamber: <0.2 mm flatness: -> seems to be no Problem, when care is taken during gluing process (use additional clamps on gluing table). Profile Production: L-profiles: keep inhouse Front profiles: Investigate outside company

8. 27.5.04TRD Status meeting GSIClemens Adler Wiretension machine Prototype at Hd, working, but still some minor glitches to work out.

9. 27.5.04TRD Status meeting GSIClemens Adler Production To Do Last meeting: Second Video measureing table need rails and camera holder. Produce wire ledge gluing tool H.Daues‘ design for TPC Design distance ledge gluing tool Current status: Standalone camera holder, new lens needed Not done Done for L1/2C0 types

10. 27.5.04TRD Status meeting GSIClemens Adler Production Sites Dubna: 2nd transport is almost prepared (some Padplane problems induced a slight delay) -> Material for 12 L1C0, L2C0 Chambers Bukarest: 1st material transport underway. Mihai &Co. is heavily preparing tooling (Glass tables, Lifting device for wire frames, X-Y table for X-ray source etc).

11. 27.5.04TRD Status meeting GSIClemens Adler Material Status L2C0 Padplanes: –significant amount of broken traces (~50% of PP of type 1) –still lots of shorts on padside L6C1 Padplanes: –arrived last week –middle piece is not machined to specs (>20% of PP unacceptable) L1C1 Padplanes: –arrived last week –middle pieces fit very nicely Optiprint visit in 1 week to discuss quality issues L-Profiles: 24 x C0 shipped to Dubna, 8 x C0 to Bukarest (~37 x L5/6C1 ready) next type: L1C1 Front Profiles: 18xL1, 16xL2 to Dubna 4xL1, 4xL2 to Bukarest L1 in production (16 x L6 ready)

12. 27.5.04TRD Status meeting GSIClemens Adler Material in Graphs L-Profiles: Front-Profiles: Status 25.5.04

13. 27.5.04TRD Status meeting GSIClemens Adler More issues Padplane test system will be moved to Frankfurt next week Chamber test setup near final –Rainer will prepare test document